Distribution of age, gender, and measures of experience for cases and controls*
| No (%) controls | No (%) cases | |
|---|---|---|
| Totals may not add to 100% due to rounding. | ||
| *Column totals may differ due to inclusion of data for cases and controls for whom completed interviews were not obtained and missing data from those who completed interviews. | ||
| †The road where the crash occurred or control was identified. | ||
| Age (years) | ||
| 15–19 | 132 (10.6) | 87 (18.3) |
| 20–24 | 323 (26.0) | 153 (32.2) |
| 25+ | 786 (63.3) | 235 (49.5) |
| Gender | ||
| Female | 72 (5.8) | 27 (5.7) |
| Male | 1169 (94.2) | 448 (94.3) |
| Years regular on-road motorcycle riding | ||
| <2 | 197 (16.1) | 97 (21.4) |
| 2–5 | 338 (27.5) | 136 (30.0) |
| >5 | 692 (56.4) | 221 (48.7) |
| Years regular car driving | ||
| <2 | 174 (14.6) | 85 (18.9) |
| 2–5 | 219 (18.4) | 104 (23.1) |
| >5 | 799 (67.0) | 261 (58.0) |
| On-road motorcycle riding in last year (days/week) | ||
| <1 | 130 (10.5) | 60 (13.1) |
| 1–2 | 217 (17.6) | 63 (13.7) |
| ≥3 | 888 (71.9) | 336 (73.2) |
| Familiarity with the specific motorcycle (km) | ||
| <1000 | 166 (13.7) | 99 (22.3) |
| 1000–9999 | 478 (39.3) | 179 (40.3) |
| ≥10 000 | 571 (47.0) | 166 (37.4) |
| Familiarity with the road† | ||
| Never driven before | 28 (2.3) | 21 (4.6) |
| Driven before | 1204 (97.7) | 438 (95.4) |